Html Agility Pack (HAP) Html Agility Pack

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// From File
var doc = new HtmlDocument();
doc.Load(filePath);

// From String
var doc = new HtmlDocument();
doc.LoadHtml(html);

// From Web
var url = "http://html-agility-pack.net/";
var web = new HtmlWeb();
var doc = web.Load(url);



What's Html Agility Pack?

HAP is an HTML parser written in C# to read/write DOM and supports plain XPATH or XSLT.


What's web scraping in C#?

Web scraping is a technique used in any language such as C# to extract data from a website.


Is web scraping legal?

That's a gray zone! There is no official answer about it, and almost every company has some web scraping program. In short, do polite crawling and don't spam a website and everything will be fine.


When is the v2.x coming?

There is no official date, but the work is in progress. A lot of improvement is already planned to make web scraping even easier!


Which 3rd party libraries?

You can enhance HAP with some third party libraries:


Where can I find Html Agility Pack examples?

Online examples are now available!

 Online Examples

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What we achieved over the last 4 years has grown beyond our hopes. That motivates us to continue to grow and improve all our projects. Every day, we are committed to listening to our clients to help ease the daily dev workload as much as possible.


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HTML Parser

Load and parse HTML

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HAP - Parser Example
// From File
var doc = new HtmlDocument();
doc.Load(filePath);

// From String
var doc = new HtmlDocument();
doc.LoadHtml(html);

// From Web
var url = "http://html-agility-pack.net/";
var web = new HtmlWeb();
var doc = web.Load(url);

HTML Selectors

Select HtmlNode, Element, and Attributes:

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HAP - Selectors Examples
// With XPath 
var value = doc.DocumentNode
 .SelectNodes("//td/input")
 .First()
 .Attributes["value"].Value;
 
// With LINQ 
var nodes = doc.DocumentNode.Descendants("input")
 .Select(y => y.Descendants()
 .Where(x => x.Attributes["class"].Value == "box"))
 .ToList();

HTML Manipulation

Manipulate HtmlNode, Element, and Attributes:

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HAP - Manipulation Example
var doc = new HtmlDocument();
doc.LoadHtml(html);

// InnerHtml 
var innerHtml = doc.DocumentNode.InnerHtml;

// InnerText 
var innerText = doc.DocumentNode.InnerText;

HTML Traversing

Traverse HtmlNode, Element, and Attributes:

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HAP - Traversing Example
var doc = new HtmlDocument();
htmlDoc.LoadHtml(html);

// Descendants 
var nodes = doc.DocumentNode.Descendants("input");